ZL38065 Datasheet, PDF (19/48 Pages) Zarlink Semiconductor Inc – 32 Channel Voice Echo Canceller

ZL38065
Data Sheet
Group
Channels
Group
Channels
0
0, 1
8
16, 17
1
2, 3
9
18, 19
2
4, 5
10
20, 21
3
6, 7
11
22, 23
4
8, 9
12
24, 25
5
10, 11
13
26, 27
6
12, 13
14
28, 29
7
14, 15
15
30, 31
Table 3 - Group and Channel Allocation
6.2 Extended Delay Configuration
For a given group (group 0 to 15), only one PCM I/O channel is active (Echo Canceller A) and the other channel
carries quiet code. For example, group 2, Echo Canceller A (Channel 4) will be active and Echo Canceller B
(Channel 5) will carry quiet code.
6.3 Back-to-Back Configuration
For a given group (group 0 to 15), only one PCM I/O channel is active (Echo Canceller A) and the other channel
carries quiet code. For example, group 5, Echo Canceller A (Channel 10) will be active and Echo Canceller B
(Channel 11) will carry quiet code.
Group 0
Echo
Cancellers
Registers
Channel 0, ECA Ctrl/Stat Registers
Channel 1, ECB Ctrl/Stat Registers
Group 1
Echo
Cancellers
Registers
Channel 2, ECA Ctrl/Stat Registers
Channel 3, ECB Ctrl/Stat Registers
0000h --> 001Fh
0020h --> 003Fh
0040h --> 005Fh
0060h --> 007Fh
Groups 2 --> 14
Echo Cancellers
Registers
Group 15
Echo
Cancellers
Registers
Channel 30, ECA Ctrl/Stat Registers
Channel 31, ECB Ctrl/Stat Registers
03C0h --> 03DFh
03E0h --> 03FFh
Main Control Registers <15:0>
Interrupt FIFO Register
Test Register
Reserved Test Register
0400h --> 040Fh
0410h
0411h
0412h ---> FFFFh
Figure 11 - Memory Mapping
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Zarlink Semiconductor Inc.